opencv视频的读取和创建

来源：互联网发布：java 字符串分割编辑：程序博客网时间：2024/04/27 21:49
转自http://blog.csdn.net/lst227405/article/details/27566167
#include <opencv2/opencv.hpp>#include <opencv2/core/core.hpp>#include <opencv2/features2d/features2d.hpp>#include <opencv2/highgui/highgui.hpp>#include <opencv2/legacy/legacy.hpp>#include <iostream>#include <vector>//#include <iostream> // for standard I/O#include <string>   // for strings#include <iomanip>  // for controlling float print precision#include <sstream>  // string to number conversion#include <opencv2/imgproc/imgproc.hpp>  // Gaussian Blur//#include <opencv2/core/core.hpp>        // Basic OpenCV structures (cv::Mat, Scalar)//#include <opencv2/highgui/highgui.hpp>  // OpenCV window I/Ousing namespace cv;using namespace std;int main(){    //读取视频，生成图像    const string name_file="C:\\Users\\Administrator\\Desktop\\code\\video\\video\\video";    const string name_save_file="C:\\Users\\Administrator\\Desktop\\code\\video\\video\\video\\photo\\";    const string name1="1.avi";    cv::VideoCapture src(name1);    cv::VideoCapture captst;    if(!src.isOpened())    {        cout<<"视频文件打开失败"<<endl;        return -1;    }    cv::Size size_frame=cv::Size((int)src.get(CV_CAP_PROP_FRAME_WIDTH),                                 (int)src.get(CV_CAP_PROP_FRAME_HEIGHT));    const string name_win="test";    //cv::namedWindow(name_win);    cv::Mat frame_src;    int frameNum=0;    int k=1;    std::stringstream stream;    string name_write,name_tmp;    while(true)    {        src>>frame_src;        if(frame_src.empty())        {            cout<<"game over!"<<endl;            break;            }        ++frameNum;        stream<<k;        name_tmp=stream.str();        name_write=name_save_file+name_tmp+".bmp";        imwrite(name_write,frame_src);        k++;        stream.str("");      }    //////////////////////////////////////        //读取图像，生成视频    //生成一个倒序的视频    cv::Mat frame_tmp;    VideoWriter outputVideo;    outputVideo.open("2.avi" , src.get(CV_CAP_PROP_FOURCC), src.get(CV_CAP_PROP_FPS),size_frame, true);    //                 文件名        编码器                        帧率                     大小    if(!outputVideo.isOpened())    {        cout<<"输出文件打开失败"<<endl;        return -1;    }    cout<<k<<endl;    int m=k-1;    while(true)    {        stream<<m;        name_tmp=stream.str();        name_write=name_save_file+name_tmp+".bmp";        //cout<<name_write<<endl;        frame_src=imread(name_write);                outputVideo << frame_src;        //cv::VideoCapture qwe(name_write);        //qwe >> frame_tmp;        //cv::imshow("11", frame_tmp);            m--;        if(m==0)            break;        stream.str("");      }    cout << "Finished writing" << endl;    return 0;}
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